442 lines
13 KiB
C
442 lines
13 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.io/license.html
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*/
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/**
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* @file src/gwin/gwin_slider.c
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* @brief GWIN sub-system slider code
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*/
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#include "../../gfx.h"
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#if (GFX_USE_GWIN && GWIN_NEED_SLIDER) || defined(__DOXYGEN__)
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#include "gwin_class.h"
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// Calculate the slider position from the display position
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static int SliderCalcPosFromDPos(GSliderObject *gsw) {
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int halfbit;
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// Set the new position
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if (gsw->w.g.width < gsw->w.g.height) {
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if (gsw->dpos >= gsw->w.g.height-GWIN_SLIDER_DEAD_BAND)
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return gsw->min;
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if (gsw->dpos < GWIN_SLIDER_DEAD_BAND)
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return gsw->max;
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halfbit = gsw->w.g.height/2-GWIN_SLIDER_DEAD_BAND;
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if (gsw->min > gsw->max)
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halfbit = -halfbit;
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return (((int)(gsw->w.g.height-(GWIN_SLIDER_DEAD_BAND+1)-gsw->dpos))*(gsw->max-gsw->min) + halfbit)/(gsw->w.g.height-(2*GWIN_SLIDER_DEAD_BAND+1)) + gsw->min;
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}
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if (gsw->dpos >= gsw->w.g.width-GWIN_SLIDER_DEAD_BAND)
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return gsw->max;
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if (gsw->dpos < GWIN_SLIDER_DEAD_BAND)
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return gsw->min;
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halfbit = gsw->w.g.width/2-GWIN_SLIDER_DEAD_BAND;
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if (gsw->min > gsw->max)
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halfbit = -halfbit;
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return (((int)gsw->dpos-GWIN_SLIDER_DEAD_BAND)*(gsw->max-gsw->min) + halfbit)/(gsw->w.g.width-(2*GWIN_SLIDER_DEAD_BAND+1)) + gsw->min;
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}
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// Send the slider event
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static void SendSliderEvent(GSliderObject *gsw, gU8 action) {
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GSourceListener * psl;
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GEvent * pe;
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#define pse ((GEventGWinSlider *)pe)
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// Does this slider want more than just SET events?
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if (action != GSLIDER_EVENT_SET && !(gsw->w.g.flags & GSLIDER_FLG_EXTENDED_EVENTS))
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return;
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psl = 0;
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while ((psl = geventGetSourceListener(GWIDGET_SOURCE, psl))) {
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// Work out which action to send.
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// This precedence order helps provide some protection against missed events.
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// Saving it into srcflags works regardless of if a buffer is available.
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if (psl->srcflags < action)
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psl->srcflags = action;
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// Skip sending if no buffer is available
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if (!(pe = geventGetEventBuffer(psl)))
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continue;
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// Fill in the event
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pse->type = GEVENT_GWIN_SLIDER;
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pse->gwin = (GHandle)gsw;
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pse->action = psl->srcflags;
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#if GWIN_WIDGET_TAGS
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pse->tag = gsw->w.tag;
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#endif
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// If it is a cancel or set use the defined position else use the calculated position.
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pse->position = pse->action >= GSLIDER_EVENT_CANCEL ? gsw->pos : SliderCalcPosFromDPos(gsw);
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// Cleanup and send.
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psl->srcflags = 0;
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geventSendEvent(psl);
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}
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#undef pse
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}
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// Reset the display position back to the value predicted by the saved slider position
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static void SliderResetDisplayPos(GSliderObject *gsw) {
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if (gsw->w.g.width < gsw->w.g.height)
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gsw->dpos = gsw->w.g.height-1-(gsw->w.g.height-1)*(gsw->pos-gsw->min)/(gsw->max-gsw->min);
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else
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gsw->dpos = (gsw->w.g.width-1)*(gsw->pos-gsw->min)/(gsw->max-gsw->min);
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}
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#if GINPUT_NEED_MOUSE
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// Set the display position from the mouse position
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static void SetDisplayPosFromMouse(GSliderObject *gsw, gCoord x, gCoord y) {
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if (gsw->w.g.width < gsw->w.g.height)
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gsw->dpos = y < 0 ? 0 : (y >= gsw->w.g.height ? gsw->w.g.height-1 : y);
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else
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gsw->dpos = x < 0 ? 0 : (x >= gsw->w.g.width ? gsw->w.g.width-1 : x);
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}
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// A mouse up event
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static void SliderMouseUp(GWidgetObject *gw, gCoord x, gCoord y) {
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#define gsw ((GSliderObject *)gw)
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#if !GWIN_BUTTON_LAZY_RELEASE
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// Are we over the slider?
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if (x < 0 || x >= gsw->w.g.width || y < 0 || y >= gsw->w.g.height) {
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// No - restore the slider
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SliderResetDisplayPos(gsw);
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_gwinUpdate(&gsw->w.g);
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SendSliderEvent(gsw, GSLIDER_EVENT_CANCEL);
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return;
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}
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#endif
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// Set the new position
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SetDisplayPosFromMouse(gsw, x, y);
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gsw->pos = SliderCalcPosFromDPos(gsw);
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// Update the display
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#if GWIN_SLIDER_NOSNAP
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//only adjust dpos if it equals one of the end values.
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if (gsw->w.g.width < gsw->w.g.height) {
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if (gsw->pos == gsw->min)
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gsw->dpos = gsw->w.g.height-1;
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else if (gsw->pos == gsw->max)
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gsw->dpos = 0;
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} else {
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if (gsw->pos == gsw->max)
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gsw->dpos = gsw->w.g.width-1;
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else if (gsw->pos == gsw->min)
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gsw->dpos = 0;
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}
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#else
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SliderResetDisplayPos(gsw);
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#endif
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_gwinUpdate(&gsw->w.g);
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// Generate the event
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SendSliderEvent(gsw, GSLIDER_EVENT_SET);
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#undef gsw
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}
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// A mouse down event
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static void SliderMouseDown(GWidgetObject *gw, gCoord x, gCoord y) {
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#define gsw ((GSliderObject *)gw)
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// Determine the display position
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SetDisplayPosFromMouse(gsw, x, y);
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// Update the display
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_gwinUpdate(&gsw->w.g);
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// Send the event
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SendSliderEvent(gsw, GSLIDER_EVENT_START);
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#undef gsw
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}
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// A mouse move event
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static void SliderMouseMove(GWidgetObject *gw, gCoord x, gCoord y) {
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#define gsw ((GSliderObject *)gw)
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// Determine the display position
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SetDisplayPosFromMouse(gsw, x, y);
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// Update the display
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_gwinUpdate(&gsw->w.g);
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// Send the event
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SendSliderEvent(gsw, GSLIDER_EVENT_MOVE);
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#undef gsw
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}
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#endif
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#if GINPUT_NEED_TOGGLE
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// A toggle on has occurred
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static void SliderToggleOn(GWidgetObject *gw, gU16 role) {
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#define gsw ((GSliderObject *)gw)
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if (role) {
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gwinSliderSetPosition(&gsw->w.g, gsw->pos+(gsw->max-gsw->min)/GWIN_SLIDER_TOGGLE_INC);
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SendSliderEvent(gsw, GSLIDER_EVENT_SET);
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} else {
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gwinSliderSetPosition(&gsw->w.g, gsw->pos-(gsw->max-gsw->min)/GWIN_SLIDER_TOGGLE_INC);
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SendSliderEvent(gsw, GSLIDER_EVENT_SET);
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}
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#undef gsw
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}
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static void SliderToggleAssign(GWidgetObject *gw, gU16 role, gU16 instance) {
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if (role)
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((GSliderObject *)gw)->t_up = instance;
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else
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((GSliderObject *)gw)->t_dn = instance;
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}
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static gU16 SliderToggleGet(GWidgetObject *gw, gU16 role) {
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return role ? ((GSliderObject *)gw)->t_up : ((GSliderObject *)gw)->t_dn;
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}
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#endif
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#if GINPUT_NEED_DIAL
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// A dial move event
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static void SliderDialMove(GWidgetObject *gw, gU16 role, gU16 value, gU16 max) {
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#define gsw ((GSliderObject *)gw)
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(void) role;
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// Set the new position
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gsw->pos = (gU16)((gU32)value*(gsw->max-gsw->min)/max + gsw->min);
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SliderResetDisplayPos(gsw);
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_gwinUpdate(&gsw->w.g);
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// Generate the event
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SendSliderEvent(gsw, GSLIDER_EVENT_SET);
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#undef gsw
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}
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static void SliderDialAssign(GWidgetObject *gw, gU16 role, gU16 instance) {
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(void) role;
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((GSliderObject *)gw)->dial = instance;
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}
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static gU16 SliderDialGet(GWidgetObject *gw, gU16 role) {
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(void) role;
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return ((GSliderObject *)gw)->dial;
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}
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#endif
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// The slider VMT table
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static const gwidgetVMT sliderVMT = {
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{
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"Slider", // The classname
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sizeof(GSliderObject), // The object size
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_gwidgetDestroy, // The destroy routine
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_gwidgetRedraw, // The redraw routine
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0, // The after-clear routine
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},
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gwinSliderDraw_Std, // The default drawing routine
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#if GINPUT_NEED_MOUSE
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{
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SliderMouseDown, // Process mouse down events
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SliderMouseUp, // Process mouse up events
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SliderMouseMove, // Process mouse move events
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},
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#endif
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#if GINPUT_NEED_KEYBOARD || GWIN_NEED_KEYBOARD
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{
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0 // Process keyboard events
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},
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#endif
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#if GINPUT_NEED_TOGGLE
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{
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2, // 1 toggle role
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SliderToggleAssign, // Assign Toggles
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SliderToggleGet, // Get Toggles
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0, // Process toggle off events (NOT USED)
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SliderToggleOn, // Process toggle on events
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},
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#endif
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#if GINPUT_NEED_DIAL
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{
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1, // 1 dial roles
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SliderDialAssign, // Assign Dials
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SliderDialGet, // Get Dials
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SliderDialMove, // Process dial move events
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},
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#endif
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};
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GHandle gwinGSliderCreate(GDisplay *g, GSliderObject *gs, const GWidgetInit *pInit) {
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if (!(gs = (GSliderObject *)_gwidgetCreate(g, &gs->w, pInit, &sliderVMT)))
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return 0;
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#if GINPUT_NEED_TOGGLE
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gs->t_dn = GWIDGET_NO_INSTANCE;
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gs->t_up = GWIDGET_NO_INSTANCE;
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#endif
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#if GINPUT_NEED_DIAL
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gs->dial = GWIDGET_NO_INSTANCE;
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#endif
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gs->min = 0;
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gs->max = 100;
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gs->pos = 0;
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SliderResetDisplayPos(gs);
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gwinSetVisible((GHandle)gs, pInit->g.show);
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return (GHandle)gs;
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}
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void gwinSliderSetRange(GHandle gh, int min, int max) {
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#define gsw ((GSliderObject *)gh)
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if (gh->vmt != (gwinVMT *)&sliderVMT)
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return;
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if (min == max) // prevent divide by 0 errors.
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max++;
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gsw->min = min;
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gsw->max = max;
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gsw->pos = min;
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SliderResetDisplayPos(gsw);
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#undef gsw
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}
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void gwinSliderSetPosition(GHandle gh, int pos) {
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#define gsw ((GSliderObject *)gh)
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if (gh->vmt != (gwinVMT *)&sliderVMT)
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return;
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if (gsw->min <= gsw->max) {
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if (pos < gsw->min) gsw->pos = gsw->min;
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else if (pos > gsw->max) gsw->pos = gsw->max;
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else gsw->pos = pos;
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} else {
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if (pos > gsw->min) gsw->pos = gsw->min;
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else if (pos < gsw->max) gsw->pos = gsw->max;
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else gsw->pos = pos;
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}
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SliderResetDisplayPos(gsw);
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_gwinUpdate(gh);
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#undef gsw
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}
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void gwinSliderSendExtendedEvents(GHandle gh, gBool enabled) {
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if (gh->vmt != (gwinVMT *)&sliderVMT)
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return;
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if (enabled)
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gh->flags |= GSLIDER_FLG_EXTENDED_EVENTS;
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else
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gh->flags &= ~GSLIDER_FLG_EXTENDED_EVENTS;
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}
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/*----------------------------------------------------------
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* Custom Draw Routines
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*----------------------------------------------------------*/
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void gwinSliderDraw_Std(GWidgetObject *gw, void *param) {
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#define gsw ((GSliderObject *)gw)
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const GColorSet * pcol;
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(void) param;
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if (gw->g.vmt != (gwinVMT *)&sliderVMT)
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return;
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if ((gw->g.flags & GWIN_FLG_SYSENABLED))
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pcol = &gw->pstyle->enabled;
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else
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pcol = &gw->pstyle->disabled;
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// Vertical slider
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if (gw->g.width < gw->g.height) {
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if (gsw->dpos != gw->g.height-1)
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gdispGFillArea(gw->g.display, gw->g.x, gw->g.y+gsw->dpos, gw->g.width, gw->g.height - gsw->dpos, pcol->progress); // Active area
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if (gsw->dpos != 0)
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gdispGFillArea(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gsw->dpos, pcol->fill); // Inactive area
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gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, pcol->edge); // Edge
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gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gsw->dpos, gw->g.x+gw->g.width-1, gw->g.y+gsw->dpos, pcol->edge); // Thumb
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if (gsw->dpos >= 2)
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gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gsw->dpos-2, gw->g.x+gw->g.width-1, gw->g.y+gsw->dpos-2, pcol->edge); // Thumb
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if (gsw->dpos <= gw->g.height-2)
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gdispGDrawLine(gw->g.display, gw->g.x, gw->g.y+gsw->dpos+2, gw->g.x+gw->g.width-1, gw->g.y+gsw->dpos+2, pcol->edge); // Thumb
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// Horizontal slider
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} else {
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if (gsw->dpos != gw->g.width-1)
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gdispGFillArea(gw->g.display, gw->g.x+gsw->dpos, gw->g.y, gw->g.width-gsw->dpos, gw->g.height, pcol->fill); // Inactive area
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if (gsw->dpos != 0)
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gdispGFillArea(gw->g.display, gw->g.x, gw->g.y, gsw->dpos, gw->g.height, pcol->progress); // Active area
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gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, pcol->edge); // Edge
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gdispGDrawLine(gw->g.display, gw->g.x+gsw->dpos, gw->g.y, gw->g.x+gsw->dpos, gw->g.y+gw->g.height-1, pcol->edge); // Thumb
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if (gsw->dpos >= 2)
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gdispGDrawLine(gw->g.display, gw->g.x+gsw->dpos-2, gw->g.y, gw->g.x+gsw->dpos-2, gw->g.y+gw->g.height-1, pcol->edge); // Thumb
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if (gsw->dpos <= gw->g.width-2)
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gdispGDrawLine(gw->g.display, gw->g.x+gsw->dpos+2, gw->g.y, gw->g.x+gsw->dpos+2, gw->g.y+gw->g.height-1, pcol->edge); // Thumb
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}
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// Draw the string
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gdispGDrawStringBox(gw->g.display, gw->g.x+1, gw->g.y+1, gw->g.width-2, gw->g.height-2, gw->text, gw->g.font, pcol->text, gJustifyCenter);
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#undef gsw
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}
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#if GDISP_NEED_IMAGE
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void gwinSliderDraw_Image(GWidgetObject *gw, void *param) {
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#define gsw ((GSliderObject *)gw)
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#define gi ((gImage *)param)
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const GColorSet * pcol;
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gCoord z, v;
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if (gw->g.vmt != (gwinVMT *)&sliderVMT)
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return;
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if ((gw->g.flags & GWIN_FLG_SYSENABLED))
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pcol = &gw->pstyle->enabled;
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else
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pcol = &gw->pstyle->disabled;
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if (gw->g.width < gw->g.height) { // Vertical slider
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if (gsw->dpos != 0) // The unfilled area
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gdispGFillArea(gw->g.display, gw->g.x+1, gw->g.y+1, gw->g.width-2, gsw->dpos-1, gw->pstyle->enabled.progress); // Inactive area
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if (gsw->dpos != gw->g.height-1) { // The filled area
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for(z=gw->g.height, v=gi->height; z > gsw->dpos;) {
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z -= v;
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if (z < gsw->dpos) {
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v -= gsw->dpos - z;
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z = gsw->dpos;
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}
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gdispGImageDraw(gw->g.display, gi, gw->g.x+1, gw->g.y+z+1, gw->g.width-1, v-2, 0, gi->height-v);
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}
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}
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gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, pcol->edge); // Edge
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gdispGDrawLine(gw->g.display, gw->g.x+1, gw->g.y+gsw->dpos, gw->g.x+gw->g.width-2, gw->g.y+gsw->dpos, pcol->edge); // Thumb
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// Horizontal slider
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} else {
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if (gsw->dpos != gw->g.width-1) // The unfilled area
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gdispGFillArea(gw->g.display, gw->g.x+gsw->dpos+1, gw->g.y+1, gw->g.width-gsw->dpos-2, gw->g.height-2, gw->pstyle->enabled.progress); // Inactive area
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if (gsw->dpos != 0) { // The filled area
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for(z=0, v=gi->width; z < gsw->dpos; z += v) {
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if (z+v > gsw->dpos)
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v -= z+v - gsw->dpos;
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gdispGImageDraw(gw->g.display, gi, gw->g.x+z+1, gw->g.y+1, v-1, gw->g.height-2, 0, 0);
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}
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}
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gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, pcol->edge); // Edge
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gdispGDrawLine(gw->g.display, gw->g.x+gsw->dpos, gw->g.y+1, gw->g.x+gsw->dpos, gw->g.y+gw->g.height-2, pcol->edge); // Thumb
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}
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gdispGDrawStringBox(gw->g.display, gw->g.x+1, gw->g.y+1, gw->g.width-2, gw->g.height-2, gw->text, gw->g.font, pcol->text, gJustifyCenter);
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#undef gsw
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#undef gi
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}
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#endif /* GDISP_NEED_IMAGE */
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#endif /* GFX_USE_GWIN && GWIN_NEED_BUTTON */
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